CVE-2026-22855VulnerabilityPublished 27 Apr 2026Updated 16 Sep 2026

SUSE · Security update for freerdp2

Affects SUSESource GCVE Database

Compare

Mentioned vulnerabilities

Not known to be exploited : upgrade SUSE to 9.8 soon.

Data as of 30 Oct 2026, 11:52 UTC

Severity

High

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS: 0.8% chance of exploitation in 30 days – higher than 59% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 9.8

Exploitation evidence

Disclosed: evidence found.
CVE published 27 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade SUSE to 9.8.

Affected software

Product	Affected	Fixed in
SUSE Product Security Team SUSE	Affected >=9 <9.8	Fixed in 9.8

AI-suggested

An official security update is available and should be applied promptly. Red Hat has released patched versions of freerdp2 for Red Hat Enterprise Linux 9 and related distributions. Users should follow the vendor's instructions to update to freerdp2-2.11.7-1.el9_7.2 or later. No additional mitigations are required beyond applying the official patches.

Description

Multiple security vulnerabilities have been fixed in freerdp2, a free implementation of the Remote Desktop Protocol (RDP). These include out-of-bounds reads and writes, buffer overflows, use-after-free errors, and denial of service issues. The update addresses a broad set of CVEs affecting various components such as clipboard handling, window management, audio processing, and smartcard functionality. Red Hat Enterprise Linux 9 and related distributions have released patches to remediate these issues.

Impact

The vulnerabilities fixed in this update could allow attackers to cause application crashes, denial of service, or potentially execute arbitrary code due to memory corruption issues such as buffer overflows and use-after-free bugs. These issues affect the freerdp2 client and related components, which are used to connect to RDP servers. Successful exploitation could impact the confidentiality, integrity, and availability of affected systems.

Summary

This security update for freerdp2 addresses numerous vulnerabilities including heap-buffer-overflows, global-buffer-overflows, out-of-bounds reads and writes, use-after-free conditions, and denial of service flaws. The issues affect multiple functions such as xf_rail_server_execute_result(), xf_clipboard_format_equal(), rail_window_free(), and others. The update includes fixes for CVE-2026-22855, CVE-2026-22858, CVE-2026-22859, and many others, resolving critical memory safety bugs and stability problems. The vendor advisory from Red Hat confirms the availability of patches for Red Hat Enterprise Linux 9 and related variants.

CWE-125Out-of-bounds Read (opens in a new tab)
Base weaknessCWE Top 25 (2025): #8
The product reads data past the end, or before the beginning, of the intended buffer.
Implementation · Input Validation
Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
Architecture and Design · Language Selection
Use a language that provides appropriate memory abstractions.
OWASP Cheat Sheets
XML Security (opens in a new tab)
Mass Assignment (opens in a new tab)
OWASP ASVS 4.0.3
V13.3.1 (opens in a new tab)
V5.1.4 (opens in a new tab)
V5.1.3 (opens in a new tab)
Attack patterns
Overread Buffers (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).
CWE-787Out-of-bounds Write (opens in a new tab)
Base weaknessLikelihood of exploit: HighCWE Top 25 (2025): #5
The product writes data past the end, or before the beginning, of the intended buffer.
Requirements · Language Selection
Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Architecture and Design · Libraries or Frameworks
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Operation · Build and Compilation · Environment Hardening
Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index…
OWASP Cheat Sheets
XML Security (opens in a new tab)
Mass Assignment (opens in a new tab)
OWASP ASVS 4.0.3
V13.3.1 (opens in a new tab)
V5.1.4 (opens in a new tab)
V5.1.3 (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

Loading reviews…

Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 17 Sep 2026, 03:26 UTC

WeaknessesCWE-125, CWE-787

Technical details

References

Community reviews

Related threats